Hot
Saftronics DSH6 Heater Controller
dsh6 heater controller
dsh6 heater controller
dsh6 heater controller
DSH6 Phase Angle Heater Controller - Image 5
dsh6 heater controller
dsh6 heater controller
DSH6 Phase Angle Heater Controller - Image 8
Saftronics DSH6 Heater Controller
Saftronics DSH6 Heater Controller inside
Saftronics DSH6 Heater controller top_bottom
Click to enlarge
Saftronics DSH6 Heater Controller
dsh6 heater controller
dsh6 heater controller
dsh6 heater controller
DSH6 Phase Angle Heater Controller - Image 5
dsh6 heater controller
dsh6 heater controller
DSH6 Phase Angle Heater Controller - Image 8
Saftronics DSH6 Heater Controller
Saftronics DSH6 Heater Controller inside
Saftronics DSH6 Heater controller top_bottom
Solar Garden Light 8 Watt
Solar Garden Light 8 Watt R 5 770.70 Incl . VAT
Back to products
Sunsynk with hubble solar system
Sunsynk Inverter with Hubble Lithium Battery 6kW / 12kW Solar System Price range: R 57 684.00 through R 161 644.00 Incl . VAT

DSH6 Phase Angle Heater Controller

Price range: R 31 404.20 through R 80 036.55 Incl . VAT

Electrical Specifications
Voltage Type: 3 Phase Input
SCR Voltage Rating: 2.5 x Line-Line AC Voltage
DSH6-XXX-3: 420Vac Max Continuous RMS Voltage
DSH6-XXX-5: 580Vac Max Continuous RMS Voltage
Line Frequency: 50/60Hz

Control Card Specifications
ST33 Control supply: 1ph 220Vac OR 2ph 400Vac
220Vac tolerance: 185-255Vac
380Vac tolerance: 320-435Vac
Line Current: 200mA
Line Frequency: 50/60Hz
Sync Voltage: 50-660Vac

Fan Specifications
Supply Voltage: 220Vac, 50Hz, 500mA

Please note: Units are made to order with a lead time of 4-6 weeks.

Burst Fire VS Phase Angle

Understanding the Differences Between Burst Firing and Phase Angle Heater Controllers

In industrial and residential heating applications, precise control of heating elements is crucial for efficiency, performance, and energy savings. Two common methods for controlling heater elements are Burst firing (Saftronics SH4) and phase angle control (Saftronics DSH6). Both techniques have their distinct advantages and are suited to different types of applications. We will detail some differences between Burst Firing and Phase Angle heater controllers, to help you understand which might be the best fit for your needs.

Burst Firing Control

Burst firing, also known as zero-crossing switching or time-proportional control, involves switching the heater element on and off at the zero-crossing points of the AC voltage waveform. This method allows for full cycles of the AC waveform to be delivered to the heater in a controlled manner.

Advantages:

  • Reduced Electrical Noise
    Since burst firing switches at zero-crossing points, it minimizes electrical noise and reduces the likelihood of creating electromagnetic interference (EMI), which is particularly beneficial in sensitive electronic environments.
  • Energy Efficiency
    By delivering full AC cycles to the heater, burst firing ensures that the power delivered is efficient and consistent, leading to potential energy savings.
  • Simpler Design
    Burst firing controllers are often simpler in design compared to phase angle controllers, making them more cost-effective and easier to implement in certain applications.
  • Longer Heater Element Life
    The on-off nature of burst firing reduces the thermal stress on heating elements, potentially extending their lifespan.

Disadvantages:

  • Slower Response
    Burst firing may not be suitable for applications requiring rapid temperature changes, as the on-off cycles can result in slower response times.
  • Less Precise Control
    The control resolution is lower compared to phase angle control, which can be a drawback in applications needing very fine temperature regulation.

Phase Angle Control

Phase angle control, on the other hand, adjusts the power delivered to the heater by controlling the point within each AC cycle where the voltage is turned on. This allows for fine-grained control of the power delivered to the heating element.

Advantages:

  • Precise Temperature Control
    Phase angle control provides very precise control over the power output, making it ideal for applications requiring exact temperature regulation.
  • Rapid Response
    The ability to adjust power within each AC cycle allows for faster response times to changes in temperature demands, which is crucial in dynamic heating applications.
  • Smooth Power Delivery
    Phase angle control provides a smooth and continuous power delivery, which can be beneficial for certain types of heating elements and processes.

Disadvantages:

  • Increased Electrical Noise
    The main drawback of phase angle control is the increased electrical noise and EMI it generates, which can interfere with other electronic devices and require additional filtering.
  • Complex Design
    Phase angle controllers are generally more complex and costly to design and implement compared to burst firing controllers.
  • Potential Shorter Heater Life
    The continuous adjustment of power can cause more thermal stress on heating elements, potentially reducing their lifespan.

Applications and Selection Criteria

The choice between burst firing and phase angle control depends largely on the specific requirements of your application.

Burst Firing:

Ideal for applications where electrical noise must be minimized, where slower response times are acceptable, and where cost-effective and simpler designs are preferred. Common applications include heating elements in residential or industrial environments where precise control is not critical.

Phase Angle Control:

Best suited for applications requiring rapid and precise temperature control, despite the potential for increased electrical noise. Typical uses include laboratory heating equipment, plastic extrusion processes, and other industrial applications where exact temperature regulation is crucial

Conclusion

Both burst firing and phase angle control methods offer distinct benefits and are suited to different types of heating applications. By understanding the differences between these control methods, you can select the most appropriate one for your specific needs, ensuring efficient and effective temperature management in your systems.

 
*Dispatched/Collection in 4-6 Weeks
**Please wait for collection notification before collecting

Get a Quote
Add to wishlist
SKU: N/A Category:
Description

Saftronics DSH6 Series Phase-Angle Heater Controller

The Saftronics DSH6 Series Heater Controller is a solid-state, phase-angle, variable voltage controller designed for precise power regulation in three-phase resistive loads or primary transformer control banks. Each heater controller in the DSH6 range is equipped with six SCRs in the power circuit, managed by the advanced ST33 series control card for high-performance, reliable operation.

ST33 Control Card Features:

  • Advanced Microprocessor Technology

    Utilizes a 32-bit industrial high-speed microprocessor and an LCD interface. Manufactured using fully automatic SMD processes to ensure stable and reliable performance.

  • Real-Time Fault Detection

    Continuously monitors load status, current, control signals, and feedback signal integrity. Built-in alarm functions provide alerts for abnormal conditions.

  • Overload Protection

    Detects continuous overload conditions post-startup and activates protection mechanisms, including system shutdown and alarm relay output.

  • Precise Load Control

    Digital constant current and constant voltage regulation, with current and voltage limiting features, enable highly accurate load management. Includes overcurrent and overvoltage protection.

  • Soft Start Function

    Implements a gradual voltage ramp-up from 0% to 100% during startup to minimize impact on the power grid and connected equipment. The soft start duration is adjustable.

  • Phase Loss Protection

    Monitors the main power supply for phase loss. In such cases, the controller halts output and triggers a warning.

  • Remote Control & Communication

    Fully isolated RS485 interface with MODBUS support allows seamless integration with PLCs and other automation equipment for remote operation.

  • Enhanced Diagnostics

    Dual-row LED indicators on the thyristor drive interface provide quick fault diagnosisโ€”green for trigger board status, red for external control signal integrity.

Robust Construction & Efficient Maintenance

Saftronics phase-angle heater controllers are engineered for easy maintenance and rapid servicing. Key components like SCRs, PC boards, and control fuses are modular and easily replaceable to minimize downtime. Built-in thermal protection automatically shuts down the controller if cooling airflow is lost or heat sink temperatures exceed safe levels, protecting critical components from overheating.

Power Ratings and Specifications

The DSH6 Series heater controller supports power ratings from 69 kW to 730 kW, compatible with 400V and 550V AC supply systems. The integrated ST33 control card operates within a sync voltage range of 50โ€“660Vac, making it versatile for a wide range of industrial heating applications.

Read about the difference between Burst Firing and Phase Angle heater controllers here.

Datasheets & Manuals

Reviews (0)

Reviews

There are no reviews yet.

Be the first to review “DSH6 Phase Angle Heater Controller”
Shipping & Delivery

Shipping & Delivery Policy

Order Processing and Dispatch

  • Orders are shipped only once payment has been successfully confirmed.
  • Upon confirmation, orders are typically dispatched within 1-2 working days.
  • Orders placed after 11:00 AM on Fridays, or on weekends or public holidays, will only be processed on the next business day.

Delivery Times

  • Estimated delivery is within 3-5 business days from the dispatch date.
  • Delivery times may vary based on location, courier availability, and external conditions.

Collection

  • Collection is available for customers who select this option at checkout.
  • Please wait for a collection notice via email before arriving to collect your order.

Additional Information

  • We aim to ensure timely delivery but are not responsible for delays caused by courier services or unforeseen circumstances.
  • If you have any questions about your order status, please contact our customer service team for assistance.
  • Saftronics (Pty) Ltd will not be held liable for any transport damages or losses that may be incurred during transit, via theft, looting, hijacking, fire, mishandling, negligence, acts of God, or any other cause that is out of our control [force majeure].

Refund Policy

  • A minimum of 15% handling fee will be levied on goods returned due to no fault of ours if return is made after 7 working days, and if the goods have been correctly processed and delivered provided goods are returned in there original packaging.
  • Any goods returned will first be subject to a full Technical inspection, should there be any damage to the unit. SAFTRONICS reserves the right to decline the return or charge a larger handling fee.

Price Policy

All prices listed in this online store including shipping costs are purely indicative and are subject to fluctuations based on the prices of our suppliers. Quoted prices may change without notice until we provide you with the final proforma invoice with bank details for payment.

Related products

Hot
saftronics heater controller
heater controller

SH4 Burst Fire Heater Controller

Price range: R 12 847.80 through R 21 048.45 Incl . VAT
Add to wishlist
Select options This product has multiple variants. The options may be chosen on the product page
Quick view